白音查干凹陷层序地层格架及充填样式
|
摘要
二连盆地白音查干凹陷是一个北断南超型的箕状断陷盆地。通过岩心、录井剖面、测井曲线和地震资料的综合研究 ,结合EXXON公司的层序地层划分模式和T .Cross高分辨层序地层的基准面旋回模式 ,将凹陷的主要研究目的层———下白垩统巴彦花群划分出 2个超层序 ,6个三级层序 ;识别出冲积扇、扇三角洲等 6种沉积相类型 ,其中冲积扇、扇三角洲发育在凹陷的北部陡坡带 ,辫状河三角洲和浊积扇发育在凹陷南部缓坡 ;发现凹陷经历 3次大的湖泛 ,在层序演化上具有早期形成及继承性发育的特点
Located in Er'lian basin, Baiyinchagan is a depression with faults in the north and overlap in the south. An overall research was carried out on the basis of drill cores, logging profiles, logs and seismic data in combination with the classic pattern of sequence stratigraphic framework by the EXXON Oil Company and the base level cycle pattern of high resolution sequence stratigraphy by T.Cross.As a result,two super sequences and six third order sequences have been identified in Lower Cretaceous Bayanhua Group, the fundamental target bed of this region. In addition, six types of sedimentary facies have been recognized.Among these sedimentary facies, alluvial fans and fan delta are found on the steep slope in the north of the depression, while braid river deltas and turbidite fans are found on the ramp in the south. Three times of lake transgression can be distinguished. It seems that they were formed in early time, developed continuously and reached the largest scale later.
Located in Er'lian basin, Baiyinchagan is a depression with faults in the north and overlap in the south. An overall research was carried out on the basis of drill cores, logging profiles, logs and seismic data in combination with the classic pattern of sequence stratigraphic framework by the EXXON Oil Company and the base level cycle pattern of high resolution sequence stratigraphy by T.Cross.As a result,two super sequences and six third order sequences have been identified in Lower Cretaceous Bayanhua Group, the fundamental target bed of this region. In addition, six types of sedimentary facies have been recognized.Among these sedimentary facies, alluvial fans and fan delta are found on the steep slope in the north of the depression, while braid river deltas and turbidite fans are found on the ramp in the south. Three times of lake transgression can be distinguished. It seems that they were formed in early time, developed continuously and reached the largest scale later.
引文
中原油田研究院古生物分析报告
李思田,林畅松,解习农等.1995.大型陆相盆地层序地层学研究.地学前缘,2(3):133～136.
魏魁生,徐怀大.1994.二连盆地白垩系非海相沉积层序地层特征.地球科学,19(2):181～193.
CrossTA ,BalerMR ,ChapinMAetal.1993.Applicationofhighresolutionseqencestratigraphytoreservoiranalysis[A].EschardR ,DolgezB ,eds.SubsurfaceReservoirCharacterizationfromOutcropObservations[C].Paris:EditionsTechnip:11～33.
LiSitian,LinChangsong,XieXinongetal.1995.Approachesofnon marinesequencestratigraphy.EarthScienceFrontiers,(2):133～136(inChinesewithEnglishabstract).
VanWagonerJC ,PosamentierHW ,MitchumRMetal.1988.Anoverviewofthefundamentalsofseqencestratigraphyandkeydefi nitions[A].In:SeaLevelChanges:AnIntegratedApproach[C].SEPMSpecialPublication.42:39～45.
WeiKuisheng,XuHuaida.1994.SequenceStratigraphicFeaturesofCretaceousNonmarineSedimentsinErlianBasin.EarthScience,19(2):181～193(inChinesewithEnglishabstract).
李思田,林畅松,解习农等.1995.大型陆相盆地层序地层学研究.地学前缘,2(3):133～136.
魏魁生,徐怀大.1994.二连盆地白垩系非海相沉积层序地层特征.地球科学,19(2):181～193.
CrossTA ,BalerMR ,ChapinMAetal.1993.Applicationofhighresolutionseqencestratigraphytoreservoiranalysis[A].EschardR ,DolgezB ,eds.SubsurfaceReservoirCharacterizationfromOutcropObservations[C].Paris:EditionsTechnip:11～33.
LiSitian,LinChangsong,XieXinongetal.1995.Approachesofnon marinesequencestratigraphy.EarthScienceFrontiers,(2):133～136(inChinesewithEnglishabstract).
VanWagonerJC ,PosamentierHW ,MitchumRMetal.1988.Anoverviewofthefundamentalsofseqencestratigraphyandkeydefi nitions[A].In:SeaLevelChanges:AnIntegratedApproach[C].SEPMSpecialPublication.42:39～45.
WeiKuisheng,XuHuaida.1994.SequenceStratigraphicFeaturesofCretaceousNonmarineSedimentsinErlianBasin.EarthScience,19(2):181～193(inChinesewithEnglishabstract).
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心